Remove debug printf
Fix problem with case sensitivity, finding unique column ops is case
insensitive but deciding which columns to include in input wasn't
Expand regression test to cover renaming column and renaming column to
same name with different case
Fix bug in CSV string output
Merge pull request #11 from OleLaursen/bugfixes

Bug fixes for the packet handling refactoring
Merge https://github.com/dotse/PacketQ

Conflicts:
	src/sql.cpp